ITopologicalOperator.Intersect  V.S.  ITopologicalOperator6.IntersectEx?

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02-19-2014 11:23 AM
SuiHuang
Occasional Contributor II
Hi Everybody:

    I am looking for a method to find the 3D intersection of two polylines with Z-coordinates.
    I checked the functions ITopologicalOperator.Intersect and  ITopologicalOperator6.IntersectEx. The difference is that IntersectEx has an additional boolean parameter bNonPlanar. What is this parameter for? Is it a switch to get the result in 3D?
    Thank you!
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SuiHuang
Occasional Contributor II
I understand the nonPlanar parameters now. It has nothing to do with Z-coordinates. It is used to control whether the returned geometry can intersect itself. Refer to the definition of Planar Graph
http://en.wikipedia.org/wiki/Planar_graph

Seems I need to do vertex by vertex manipulation to find the 3D intersection...

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SuiHuang
Occasional Contributor II
I understand the nonPlanar parameters now. It has nothing to do with Z-coordinates. It is used to control whether the returned geometry can intersect itself. Refer to the definition of Planar Graph
http://en.wikipedia.org/wiki/Planar_graph

Seems I need to do vertex by vertex manipulation to find the 3D intersection...

View solution in original post

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